Mix together butter and sugar in mixing bowl. Add bananas, carrot, lemon juice and eggs. Mix well with electric mixer. Stir together flour and nutmeg. Add flour mixture to banana mixture. Stir just until flour is incorporated. Stir in pecans. Line an 8� square glass baking dish with wax paper. Pour batter into pan and microwave on high about 8 minutes until toothpick inserted in center comes out clean. (Rotate dish every 2 minutes, unless you have a microwave with a rotating dish inside already!) Let bread rest for 5 minutes. Turn out onto a wire rack to cool. Peel off wax paper. Cut bread into squares to serve.